Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Samuel Asher Winston, OD
Optometrist in Knoxville, TN · enumerated 2011 · practices at Winston, Winston & Winston PC.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1346536562
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Registry record
Taxonomy & licenses
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 103I416085 | Other | TN | MEDICARE PTAN # |
| 1346536562 | Other | TN | BLUE CROSS BLUE SHIELD BLUE ADVANTAGE |
| 1346536562 | Other | TN | EYEMED |
| 1525118 | Medicaid | TN | - |
| 1346536562 | Other | TN | BLUE CROSS BLUE SHIELD BLUE NETWORK P |
| 103G706085 | Other | TN | MEDICARE PTAN GROUP # |
| 1346536562 | Other | TN | SUPERIOR |
| 1346536562 | Other | TN | BLUE CROSS BLUE SHIELD BLUE NETWORK V |
| 1346536562 | Other | TN | BLUE CROSS BLUE SHIELD TENNCARE SELECT |
| 1346536562 | Other | TN | BLUE CROSS BLUE SHIELD BLUE CARE |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
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Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-03-14.